Attachment device for a pushchair



FIG. 1 is a left side view of an attachment device for a pushchair showing our new design;

FIG. 2 is a right side view thereof;

FIG. 3 is a rear view thereof; and,

FIG. 4 is a perspective view thereof.

The broken lines are directed to environment and are for illustrative purposes only, thus forming no part of the claimed design. 

The ornamental design for an attachment device for a pushchair, as shown and described. 